net/mlx5_core: Set IB capability mask1 to fix ib_srpt connection failure

net/mlx5_core: Set IB capability mask1 to fix ib_srpt connection failure

The cap_mask1 isn't protected by field_select and not listed among RW
fields, but it is required to be written to properly initialize ports
in IB virtualization mode.

Link: https://lore.kernel.org/linux-rdma/88bab94d2fd72f3145835b4518bc63dda587add6.camel@redhat.com
Fixes: ab118da4c10a ("net/mlx5: Don't write read-only fields in MODIFY_HCA_VPORT_CONTEXT command")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>